Well in short:-
What if that foreign government was almost bankrupt and was begging for a bail out?
Lord Healey was asked about this and he insists that the two things are not connected. I'm inclined to agree with him as the saga is history now and Healey is an old man - he has no motive to tell fibs about it any longer.
wanted the TSR2 but switched because they realised it was going to be cancelled
Not true - the Australian Public Records Office holds the original documents exchanged between the Prime Ministers and the simple fact was that Australia chose F-111 because they were offered a better deal.